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00001 #ifndef COIN_SBMUTEX_H 00002 #define COIN_SBMUTEX_H 00003 00004 /**************************************************************************\ 00005 * 00006 * This file is part of the Coin 3D visualization library. 00007 * Copyright (C) by Kongsberg Oil & Gas Technologies. 00008 * 00009 * This library is free software; you can redistribute it and/or 00010 * modify it under the terms of the GNU General Public License 00011 * ("GPL") version 2 as published by the Free Software Foundation. 00012 * See the file LICENSE.GPL at the root directory of this source 00013 * distribution for additional information about the GNU GPL. 00014 * 00015 * For using Coin with software that can not be combined with the GNU 00016 * GPL, and for taking advantage of the additional benefits of our 00017 * support services, please contact Kongsberg Oil & Gas Technologies 00018 * about acquiring a Coin Professional Edition License. 00019 * 00020 * See http://www.coin3d.org/ for more information. 00021 * 00022 * Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY. 00023 * http://www.sim.no/ sales@sim.no coin-support@coin3d.org 00024 * 00025 \**************************************************************************/ 00026 00027 #include <Inventor/SbBasic.h> 00028 #include <Inventor/C/threads/mutex.h> 00029 00030 class SbMutex { 00031 public: 00032 SbMutex(void) { this->mutex = cc_mutex_construct(); } 00033 ~SbMutex() { cc_mutex_destruct(this->mutex); } 00034 00035 int lock(void) { 00036 cc_mutex_lock(this->mutex); 00037 /* Useless return, here just for compatibility with TGS' 00038 SbThreadMutex API: */ 00039 return 0; 00040 } 00041 00042 SbBool tryLock(void) { 00043 return cc_mutex_try_lock(this->mutex) == CC_OK; 00044 } 00045 00046 int unlock(void) { 00047 cc_mutex_unlock(this->mutex); 00048 /* Useless return, here just for compatibility with TGS' 00049 SbThreadMutex API: */ 00050 return 0; 00051 } 00052 00053 private: 00054 // FIXME: we need access to C mutex structur. Should we use friend, 00055 // or should we add a new public method to get to this structure? 00056 // pederb, 2002-06-26 00057 friend class SbCondVar; 00058 cc_mutex * mutex; 00059 }; 00060 00061 00062 #ifndef COIN_INTERNAL 00063 // For TGS Inventor compile-time compatibility. 00064 #include <Inventor/threads/SbThreadAutoLock.h> 00065 #endif // COIN_INTERNAL 00066 00067 #endif // !COIN_SBMUTEX_H
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